Paper Title:
Thick Hydroxyapatite Coating on Ti-6Al-4V through Sol-Gel Method
  Abstract

Hydroxyapatite (HA, Ca10(PO4)6(OH)2) powder along with other additives such as P2O5, Na2Co3 and KH2PO4 are used for biocompatible coating of Ti-6Al-4V through sol-gel method. An in-house dip coating machine was developed to control dipping and withdrawal rates of the substrate. After passivating of the samples in nitric acid, coating of HA gel was performed followed by sintering in a vacuum furnace. Characterization of the coating layer was evaluated by the XRD and SEM. Imagej software was used for analysis of the data. It was found that increasing the sintering temperature decreases the pore size, resulting in a denser structure of hydroxyapatite and decrease in surface roughness of the coating. High sintering temperatures produced cracked surface of HA due to the α to β transition temperature of Ti and its alloys. HA with coating thickness of about 100 µm free cracks was obtained for sintering temperatures lower than 800 °C.

  Info
Periodical
Advanced Materials Research (Volumes 341-342)
Edited by
Liu Guiping
Pages
48-52
DOI
10.4028/www.scientific.net/AMR.341-342.48
Citation
S. Jafari, M. M. Taheri, J. Idris, "Thick Hydroxyapatite Coating on Ti-6Al-4V through Sol-Gel Method", Advanced Materials Research, Vols. 341-342, pp. 48-52, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Zeng Yi, Xue Bin Zheng, Heng Ji, Wei Wu, Soo Wohn Lee
Abstract:The W coatings were prepared by applying the vacuum plasma spraying process (VPS). The phase composition, microstructure and laser...
849
Authors: N. R. Ha, Z. X. Yang, Kyu Hong Hwang, J. K. Lee
Abstract:Pure Titanium alloys are superiorities of biocompatibility, mechanical properties and chemical stability. The biocompatibility of Ti alloy...
177
Authors: Cui Li, Wei Qi, Kutsuna Muneharu
Abstract:A zircon coating was applied on the surface of Ti-6Al-4V alloy by plasma spray and its effect on the high temperature tensile properties of...
547
Authors: Guo Jun Li, Xue Jun Cui, Rui Ming Ren
Abstract:The organic-inorganic hybrid sol was prepared using an alkaline silica sol modified by acid-catalyzed hydrolytic polycondensation of...
1197
Authors: Ping Yi Guo, Ning Wang, Peng Fan
Chapter 1: Traditional Building Materials
Abstract:Ceramic oxide coatings were produced on pure titanium by plasma electrolytic oxidation in different electrolytes. The variation of coating...
596